Twenty

Kim Woo-bin

Chi-ho

Lee Jun-ho

Dong-woo

Kang Ha-neul

Kyung-jae

Jung So-min

So-min

Lee Yu-bi

So-hee

Min Hyo-rin

Jin-joo

Ahn Jae-hong

In-gook

Heo Joon-seok

Bum-soo

Jeon Yeo-jin

Bum-soo's Wife

Park Myung-shin

Chi-ho's Mother

Oh Hyun-kyung

Dong-woo's Mother

Yoon Ga-hyun

Grilled Clam Restaurant Owner

Kim Eui-sung

Chi-ho's Father

Na In-woo

Dong-won

Han Jun-woo

Club DJ

Kim Chan-hyung

Head of Loan Shark

Baek Soo-hee

Min-jung

Park Hyeok-kwon

Movie Director

Kim Jong-soo

Dong-woo's Uncle

So Hee-jung

Kyung-jae's Mother

Hong Wan-pyo

Assistant Director

Yang Hyun-min

So-jung

Kim Jae-man

Chicken Restaurant Owner

Hwang Mi-young

Woman bumps into Kyung-jae on Campus

Oh Ha-nee

Makeup Team

Kang Chung-hun

Dong-woo's Colleague

Jung Seo-in

Hair Salon Staff